Private-Pay
First untraceable, unidentifiable, payments dapp
Demo
About
The problem it solves ## Financial Privacy is Broken ### Real-Life Story **Alice**, a legendary dev, won the ETHIndia Hackathon and received **$3,000** in prize money. **Bob**, another participant who also won at the same hackathon, had a co-founder who wasn't trustworthy — the co-founder refused to admit receiving any prize money. Bob messaged all **3 winners** asking for the organizer's wallet address. 1/3 winner shared it. On the explorer, that single address made it trivial to see who received what. Bob quickly inferred that **$9,000** had been split among three people and, in a couple of minutes and with basic intelligence tools like Arkham, Dune Analytics, etc. linked **every wallet to its owner**. **That's a serious concern.** Nobody wants the wallet that holds their real funds to be exposed. Bob — or anyone with the same info — could target those people for their own benefit. ### The Core Issues ❌ **Payments on public blockchains are NOT private** - Traceable through tools like Arkham Intelligence - Trackable via Dune Analytics and explorers - Identifiable by anyone with basic skills ❌ **Results:** - Fear of transacting - Inconvenience for legitimate users - Financial loss from targeted attacks - Privacy violations for everyone --- ## ✅ The Solution: PrivatePay **Where every transaction is fully private, anonymous, unidentifiable, and untrackable.** ### Core Benefits (current implementation) - ✨ **Sender privacy**: Your wallet is never linked to the transaction - ✨ **Receiver privacy**: Recipients' identities remain hidden - ✨ **Observer blindness**: Third parties see nothing linkable - ✨ **Simple UX**: Like Stripe links, but every transaction is a new, invisible wallet ### Key Features (current) 🔒 **Infinite Untraceable Stealth Accounts** - Each payment generates a fresh stealth sub-account - Unlimited transactions, unlimited mixers - One single DarkPool 💼 **Static Payment Links** - Share a single payment link (e.g., amaan.privatepay.base) - Each access generates a unique stealth address - No complex setup required 🔐 **Complete Unlinkability** - Sender cannot identify receiver - Receiver cannot identify sender - Observers see nothing linkable
How it's made
Challenges we ran into The ultimate challenge was to figure out how the single darkpool mixer mechanism would work with a combination of multiple architectures of Tornado Cash + ZCash + Elliptic Curve Diffie-Hellman (ECDH) + secp256k1 + BIP 0352 / EIP 5564. It took time, a day was devoted to research, and I finally found a way to build the most innovative architecture.